ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.Geometry Namespace / ProjectionTransformation Class / OutputSpatialReference Property

OutputSpatialReference Property (ProjectionTransformation)
Gets the output spatial reference.
Syntax
public SpatialReference OutputSpatialReference {get;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also